ABSTRACT. Use of the genus Sphenobaiera Florin for deeply divided ginkgoalean leaves lacking a petiole is discussed. The type material of the species Sphenobaiera ikorfatensis (Seward) Florin from the Lower Cretaceous at Ikorfat in West Greenland is diagnosed, redescribed and the lectotype designated. The cuticle, which is described and ®gured in detail for the ®rst time, shows the leaf to be amphistomatic and allows previous identi®cations of Sphenobaiera ikorfatensis in Lower Cretaceous¯oras from Siberia and China to be con®rmed.

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